Manufactured by: 3COM Model/Part : 3CP2977 Device Type: Fax / modem Enclosure Type: Plug-in card Localization: English Interface Type: PCI Connectivity Technology: Wired Max Transfer Rate: 56 Kbps Transmission Mode: Full-duplex 56K Technology: K56Flex, x2, V.90 Protocols & Specifications: Bell 212A, ITU V.22, ITU V.22bis, ITU V.32, ITU V.32bis, ITU V.34, ITU V.90, ITU V.23, ITU V.27ter, k56Flex, x2, AT&T V.32terbo , Hayes AT command set Error Correction Protocol: MNP-4, ITU V.42, MNP-2, MNP-3 Data Compression Protocol: MNP-5, ITU V.42bis Fax Compatibility: G3 Max Fax Transfer Rate: 14.4 Kbps Voice Communication Support: Voice mail, speakerphone, VoIP Features: Auto answer, automatic data/fax detection, auto redial Interfaces: 1 x modem - phone line - RJ-11 - 2 Compatible Slots: 1 x PCI Compliant Standards: Plug and Play